46295 + Interview Questions in Chemistry

1.	Which one of the following alkali metal chlorides has the highest melting point?
Answer» Which one of the following alkali metal chlorides has the highest melting point?

Discussion

2.	why adiabatic process called fast process or why it changes suddenly
Answer» why adiabatic process called fast process or why it changes suddenly

Discussion

3.	The weight of silver (At. Wt. 108) displaced by aquantity of electricity which displaces 5600 mL ofO, at STP will beAIPMT-2014\rbrack(1) 5.4 g(3) 54.0 g(2) 10.8 g(4) 108.0 g how to calculate gram equivalents
Answer» The weight of silver (At. Wt. 108) displaced by aquantity of electricity which displaces 5600 mL ofO, at STP will beAIPMT-2014\rbrack(1) 5.4 g(3) 54.0 g(2) 10.8 g(4) 108.0 g how to calculate gram equivalents

Discussion

4.	what is the structure of diamond? i think that it will be an fcc lattice and might have a structure similar to ZnS as it is similar to diamond. can you please elaborate ? thanks.
Answer» what is the structure of diamond? i think that it will be an fcc lattice and might have a structure similar to ZnS as it is similar to diamond. can you please elaborate ? thanks.

Discussion

5.	if a nucleus is emitting electron particle,its neutron to proton ratio will a)decrease b( increase c)remain same d)can't be determined
Answer» if a nucleus is emitting electron particle,its neutron to proton ratio will a)decrease b( increase c)remain same d)can't be determined

Discussion

6.	why work done in cyclic process is not equal to zero despite of the fact △ V =0 and as we know W=△ V × P externa
Answer» why work done in cyclic process is not equal to zero despite of the fact △ V =0 and as we know W=△ V × P externa

Discussion

7.	0.701 g of silver salt of a dibasic acid on ignition yeilded 0.497g of metallic silver .calculate molecular weight of the acid
Answer» 0.701 g of silver salt of a dibasic acid on ignition yeilded 0.497g of metallic silver .calculate molecular weight of the acid

Discussion

8.	20. What is photochemical smog
Answer» 20. What is photochemical smog

Discussion

9.	To draw maximum current from a combination of cells, how should the cells be grouped?
Answer» To draw maximum current from a combination of cells, how should the cells be grouped?

Discussion

10.	48.Why ionisation energy of Galium is higher than Aluminium?
Answer» 48.Why ionisation energy of Galium is higher than Aluminium?

Discussion

11.	A mixture containing 1.6 g of O2, 1.4 g of N2 and 0.4 g of He occupies a volume of 10 L at 27∘C. Calculate the partial pressure of each component of the mixture.
Answer» A mixture containing 1.6 g of $O_{2}$ , 1.4 g of $N_{2}$ and 0.4 g of $H e$ occupies a volume of $10 L$ at $27^{\circ} C$ . Calculate the partial pressure of each component of the mixture.

Discussion

12.	The amount of ice that will seperate on cooling a solution containing 50gm of ethylene glycol in 200gm water to -9.3degree C is : (Kf = 1.86 K molality-1)
Answer» The amount of ice that will seperate on cooling a solution containing 50gm of ethylene glycol in 200gm water to -9.3degree C is : (Kf = 1.86 K molality-1)

Discussion

13.	why adition of alchol to aldehyde and ketone not under the catogory of nucliophillic adiittion eliminition reaction?
Answer» why adition of alchol to aldehyde and ketone not under the catogory of nucliophillic adiittion eliminition reaction?

Discussion

14.	For second order reaction, the unit of rate constant is
Answer» For second order reaction, the unit of rate constant is

Discussion

15.	The concentration of a reactant X decreases from 0.1 M to 0.025 M in 40 minutes. If the reaction follows I order kinetics, the rate of the reaction when the concentration of X is 0.01 M will be
Answer» The concentration of a reactant X decreases from 0.1 M to 0.025 M in 40 minutes. If the reaction follows I order kinetics, the rate of the reaction when the concentration of X is 0.01 M will be

Discussion

16.	The total number of alkenes possible by dehydrobromination of 3–bromo– 3–cyclopentylhexane using alcoholic KOH is ___
Answer» The total number of alkenes possible by dehydrobromination of 3–bromo– 3–cyclopentylhexane using alcoholic KOH is ___

Discussion

17.	Comparethe solubility and thermal stability of the following compounds ofthe alkali metals with those of the alkaline earth metals. (a)Nitrates (b) Carbonates (c) Sulphates.
Answer» Compare the solubility and thermal stability of the following compounds of the alkali metals with those of the alkaline earth metals. (a) Nitrates (b) Carbonates (c) Sulphates.

Discussion

18.	The charge on C atom in C-Mg bond in Grignard reagent is:
Answer» The charge on C atom in C-Mg bond in Grignard reagent is:

Discussion

19.	A sample of radioactive material decays simultaneously by two processes A and B with half lives 12 h and 14h, respectively. For the first half hour it decays with the process A, next one hour with the process B, and for further half an hour with both A and B. If, originally there were N0 nuclei, find the number of nuclei after 2 h of such decay.
Answer» A sample of radioactive material decays simultaneously by two processes $A$ and $B$ with half lives $\frac{1}{2}$ h and $\frac{1}{4}$ h, respectively. For the first half hour it decays with the process $A$ , next one hour with the process $B$ , and for further half an hour with both $A$ and $B$ . If, originally there were $N_{0}$ nuclei, find the number of nuclei after 2 h of such decay.

Discussion

20.	is most commonly used as disinfectant for killing bacteria in water?
Answer» is most commonly used as disinfectant for killing bacteria in water?

Discussion

21.	how h+ ion concentration in 1 ml of ph 30
Answer» how h+ ion concentration in 1 ml of ph 30

Discussion

22.	What volume of CO2 at STP will evolve when 1g of CaCO3 reacts with excess of dil Hcl.
Answer» What volume of CO2 at STP will evolve when 1g of CaCO3 reacts with excess of dil Hcl.

Discussion

23.	a wire of resis†an ce 10ohm is elongated by 10percent the resis†an ce ofelongated wire i
Answer» a wire of resis†an ce 10ohm is elongated by 10percent the resis†an ce ofelongated wire i

Discussion

24.	Concentrated aqueous sulphuric acid is 98% H2SO4 by mass and has a density of 1.80g.mL−1. Volume of acid required to make one litre of 0.1 M H2SO4 is,
Answer» Concentrated aqueous sulphuric acid is 98% $H_{2} S O_{4}$ by mass and has a density of $1.80 g . m L^{- 1} .$ Volume of acid required to make one litre of 0.1 $M H_{2} S O_{4}$ is,

Discussion

25.	calculate the volume of water to be added to 400 ml of seminormal HCL solution to make it decinormal
Answer» calculate the volume of water to be added to 400 ml of seminormal HCL solution to make it decinormal

Discussion

26.	A 0.1 M basci solution is reqired from Ca(OH)_2 which is 40% ionized. Analytical molarity of Ca(OH)_2 should be
Answer» A 0.1 M basci solution is reqired from Ca(OH)_2 which is 40% ionized. Analytical molarity of Ca(OH)_2 should be

Discussion

27.	The packing efficiency of the two dimensional unit cell show below is
Answer» The packing efficiency of the two dimensional unit cell show below is

27.

The packing efficiency of the two dimensional unit cell show below is

Answer»

The packing efficiency of the two dimensional unit cell show below is

Discussion

28.	If in a triangle r1=2r2=3r3 than a/b+b/c+c/a is
Answer» If in a triangle r1=2r2=3r3 than a/b+b/c+c/a is

Discussion

29.	Which of the following does not form complex in excess NaoH 1.Fe+3 2.zn+2
Answer» Which of the following does not form complex in excess NaoH 1.Fe+3 2.zn+2

Discussion

30.	How Metal excess defect is caused by the presence of extra cations in the interstitial sites?
Answer» How Metal excess defect is caused by the presence of extra cations in the interstitial sites?

Discussion

31.	C6H5NH2NaNO2+HCl, 0∘C−−−−−−−−−−−→XH2O, warm−−−−−−−→YIn the above reaction, Y is:
Answer» $C_{6} H_{5} N H_{2} N a N O_{2} + H C l, 0^{\circ} C - ---------- \to X H_{2} O, warm - ------ \to Y$ In the above reaction, Y is:

Discussion

32.	Find the energy of each proton A) which corresponds to the light of frequency B)having wavelength of 0.50A
Answer» Find the energy of each proton A) which corresponds to the light of frequency B)having wavelength of 0.50A

Discussion

33.	Which of the following as the lowest pKa value?
Answer» Which of the following as the lowest $p K_{a}$ value?

Discussion

34.	Cl2(g)+OH−(aq)→OCl−(aq)+Cl−(aq)Balance the above reaction using oxidation number method.
Answer» $C l_{2} (g) + O H^{-} (a q) \to O C l^{-} (a q) + C l^{-} (a q)$ Balance the above reaction using oxidation number method.

Discussion

35.	In the electrolytic refining process of Zinc, it is given that the crude metal is made anode while the electrolyte is used is H2SO4 (dilute) + ZnSO4 . The cathode should be:
Answer» In the electrolytic refining process of Zinc, it is given that the crude metal is made anode while the electrolyte is used is $H_{2} S O_{4}$ (dilute) + $Z n S O_{4}$ . The cathode should be:

Discussion

36.	The sulphur dioxide obtained by the combustion of 8 g of sulphur is passed into Bromine water. The solution is then treated with barium chloride solution. The amount of barium sulphate formed is
Answer» The sulphur dioxide obtained by the combustion of 8 g of sulphur is passed into Bromine water. The solution is then treated with barium chloride solution. The amount of barium sulphate formed is

Discussion

37.	28. Whose boilong point is higher ? primary amine Secondary amine Tertiary amine
Answer» 28. Whose boilong point is higher ? primary amine Secondary amine Tertiary amine

Discussion

38.	Can alpha-methyl-alpha-phenylethyl chloride be called 3°-benzylic halide?
Answer» Can alpha-methyl-alpha-phenylethyl chloride be called 3°-benzylic halide?

Discussion

39.	A wet ball weighing 10.1 gm has water of 0.1 g on it. The ball is moving with a constant velocity with an uncertainty of momentum of 10−6 kg m/s. What will be the ratio of uncertainty in the measurement of the position of the ball, water and electron in the water molecule ? (mass of the electron, =9.1×10−28 g )
Answer» A wet ball weighing $10.1 gm$ has water of $0.1 g$ on it. The ball is moving with a constant velocity with an uncertainty of momentum of $10^{- 6} kg m/s$ . What will be the ratio of uncertainty in the measurement of the position of the ball, water and electron in the water molecule ? (mass of the electron, $= 9.1 \times 10^{- 28} g)$

Discussion

40.	Why does the sun appear red at sunrise and sunset ?
Answer» Why does the sun appear red at sunrise and sunset ?

Discussion

41.	Which isomer of hexane has only two different sets of structurally equivalent hydrogen atom
Answer» Which isomer of hexane has only two different sets of structurally equivalent hydrogen atom

Discussion

42.	OH- ion is a polyatomic ion. It is made up of only two atoms. Then why NaCl and Na2O are not polyatomic ions even though they are made up of two atoms?
Answer» OH- ion is a polyatomic ion. It is made up of only two atoms. Then why NaCl and Na2O are not polyatomic ions even though they are made up of two atoms?

Discussion

43.	What is equivalent mass and how to find it?
Answer» What is equivalent mass and how to find it?

Discussion

44.	If 1 L 1 M solution of sulphuric acid is diluted by 5 L of water, what will be the final normality of the solution?
Answer» If 1 L 1 M solution of sulphuric acid is diluted by 5 L of water, what will be the final normality of the solution?

Discussion

45.	Amongst the following ions which one has the highest magneticmoment value?(i) [Cr(H2O)6]3+(ii) [Fe(H2O)6]2+ (iii) [Zn(H2O)6]2+
Answer» Amongst the following ions which one has the highest magnetic moment value? (i) [Cr(H₂O)₆]³⁺ (ii) [Fe(H₂O)₆]²⁺ (iii) [Zn(H₂O)₆]²⁺

45.

Amongst the following ions which one has the highest magneticmoment value?(i) [Cr(H2O)6]3+(ii) [Fe(H2O)6]2+ (iii) [Zn(H2O)6]2+

Answer»

Amongst the following ions which one has the highest magnetic
moment value?

(i) [Cr(H₂O)₆]³⁺

(ii) [Fe(H₂O)₆]²⁺

(iii) [Zn(H₂O)₆]²⁺

Discussion

46.	1 L of a solution contains 18.9 g of HNO3 and 1 L of another solution contains 3.2 g of NaOH. In what volume ratio must the solutions be mixed to obtain a neutral solution?
Answer» $1 L$ of a solution contains $18.9 g$ of $H N O_{3}$ and $1 L$ of another solution contains $3.2 g$ of $N a O H$ . In what volume ratio must the solutions be mixed to obtain a neutral solution?

Discussion

47.	The correct set of quantum number for the unpaired electron of chlorine atom is:
Answer» The correct set of quantum number for the unpaired electron of chlorine atom is:

Discussion

48.	A certain orbital has n = 4 and ml=−3. The number of radial nodes in this orbital is . ( Round off to the nearest integer)
Answer» A certain orbital has n = 4 and $m_{l} = - 3$ . The number of radial nodes in this orbital is . ( Round off to the nearest integer)

Discussion

49.	If sum of two digits of a number is 14.If 29 is substrate from it then two digits become equal .What is the number?
Answer» If sum of two digits of a number is 14.If 29 is substrate from it then two digits become equal .What is the number?

Discussion

50.	A list of activating and deactivating groups on benzene ring
Answer» A list of activating and deactivating groups on benzene ring

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Which one of the following alkali metal chlorides has the highest melting point?

why adiabatic process called fast process or why it changes suddenly

The weight of silver (At. Wt. 108) displaced by aquantity of electricity which displaces 5600 mL ofO, at STP will beAIPMT-2014\rbrack(1) 5.4 g(3) 54.0 g(2) 10.8 g(4) 108.0 g how to calculate gram equivalents

what is the structure of diamond? i think that it will be an fcc lattice and might have a structure similar to ZnS as it is similar to diamond. can you please elaborate ? thanks.

if a nucleus is emitting electron particle,its neutron to proton ratio will a)decrease b( increase c)remain same d)can't be determined

why work done in cyclic process is not equal to zero despite of the fact △ V =0 and as we know W=△ V × P externa

0.701 g of silver salt of a dibasic acid on ignition yeilded 0.497g of metallic silver .calculate molecular weight of the acid

20. What is photochemical smog

To draw maximum current from a combination of cells, how should the cells be grouped?

48.Why ionisation energy of Galium is higher than Aluminium?

A mixture containing 1.6 g of O2, 1.4 g of N2 and 0.4 g of He occupies a volume of 10 L at 27∘C. Calculate the partial pressure of each component of the mixture.

The amount of ice that will seperate on cooling a solution containing 50gm of ethylene glycol in 200gm water to -9.3degree C is : (Kf = 1.86 K molality-1)

why adition of alchol to aldehyde and ketone not under the catogory of nucliophillic adiittion eliminition reaction?

For second order reaction, the unit of rate constant is

The concentration of a reactant X decreases from 0.1 M to 0.025 M in 40 minutes. If the reaction follows I order kinetics, the rate of the reaction when the concentration of X is 0.01 M will be

The total number of alkenes possible by dehydrobromination of 3–bromo– 3–cyclopentylhexane using alcoholic KOH is ___

Comparethe solubility and thermal stability of the following compounds ofthe alkali metals with those of the alkaline earth metals. (a)Nitrates (b) Carbonates (c) Sulphates.

The charge on C atom in C-Mg bond in Grignard reagent is:

is most commonly used as disinfectant for killing bacteria in water?

how h+ ion concentration in 1 ml of ph 30

What volume of CO2 at STP will evolve when 1g of CaCO3 reacts with excess of dil Hcl.

a wire of resis†an ce 10ohm is elongated by 10percent the resis†an ce ofelongated wire i

Concentrated aqueous sulphuric acid is 98% H2SO4 by mass and has a density of 1.80g.mL−1. Volume of acid required to make one litre of 0.1 M H2SO4 is,

calculate the volume of water to be added to 400 ml of seminormal HCL solution to make it decinormal

A 0.1 M basci solution is reqired from Ca(OH)_2 which is 40% ionized. Analytical molarity of Ca(OH)_2 should be

The packing efficiency of the two dimensional unit cell show below is

If in a triangle r1=2r2=3r3 than a/b+b/c+c/a is

Which of the following does not form complex in excess NaoH 1.Fe+3 2.zn+2

How Metal excess defect is caused by the presence of extra cations in the interstitial sites?

C6H5NH2NaNO2+HCl, 0∘C−−−−−−−−−−−→XH2O, warm−−−−−−−→YIn the above reaction, Y is:

Find the energy of each proton A) which corresponds to the light of frequency B)having wavelength of 0.50A

Which of the following as the lowest pKa value?

Cl2(g)+OH−(aq)→OCl−(aq)+Cl−(aq)Balance the above reaction using oxidation number method.

In the electrolytic refining process of Zinc, it is given that the crude metal is made anode while the electrolyte is used is H2SO4 (dilute) + ZnSO4 . The cathode should be:

The sulphur dioxide obtained by the combustion of 8 g of sulphur is passed into Bromine water. The solution is then treated with barium chloride solution. The amount of barium sulphate formed is

28. Whose boilong point is higher ? primary amine Secondary amine Tertiary amine

Can alpha-methyl-alpha-phenylethyl chloride be called 3°-benzylic halide?

Why does the sun appear red at sunrise and sunset ?

Which isomer of hexane has only two different sets of structurally equivalent hydrogen atom

OH- ion is a polyatomic ion. It is made up of only two atoms. Then why NaCl and Na2O are not polyatomic ions even though they are made up of two atoms?

What is equivalent mass and how to find it?

If 1 L 1 M solution of sulphuric acid is diluted by 5 L of water, what will be the final normality of the solution?

Amongst the following ions which one has the highest magneticmoment value?(i) [Cr(H2O)6]3+(ii) [Fe(H2O)6]2+ (iii) [Zn(H2O)6]2+

1 L of a solution contains 18.9 g of HNO3 and 1 L of another solution contains 3.2 g of NaOH. In what volume ratio must the solutions be mixed to obtain a neutral solution?

The correct set of quantum number for the unpaired electron of chlorine atom is:

A certain orbital has n = 4 and ml=−3. The number of radial nodes in this orbital is . ( Round off to the nearest integer)

If sum of two digits of a number is 14.If 29 is substrate from it then two digits become equal .What is the number?

A list of activating and deactivating groups on benzene ring